Spool



(No Model.)

L. N. PARKS.

SPOOL. No. 597,017. Patented Jan. 11,1898.

UNITED STATES PATENT FHCE LEVI N. PARKS, OF XVINCHENDON, MASSACHUSETTS.

SPOOLQ SPECIFICATION formng part of Letters Patent No. 597,017, dateci.'anuary 11, 1898.

Appiication fiied April 23, 1897.

T0 (LZZ whom i2f may concern- Be in known that I, LEVI N. PARKS, acitizen of the United States, residing ai; Winchendon, in che county ofVorcester and State of Massachusetts, have invented a new and usefuiImprovement in Spoois, of which the foilowing is a specification,reference being had to the accompanying drawings, forming a, part of thesame, in which- Figure 1 represents one end of a spool embodying myimprovements and represented in side view. Fig. 2 is a centrallongitudinai sectional view of uhat portion of the spool represented inFig. 1, the section being taken on iine 2 2, Fig. 1; and Fig. 3represents a portion of the boit by which the head is attached to thebarrel of the spool.

Similar 1etters refer to simlar parts in the different figures.

My invention relates more particularly to {in improvement in that classof spools known as jack-spools, and in che accompanying drawings, Adenotes une end of che barrel, having a ho1e A coincidenu with the axisof the spooi and a 11016 A extendng trans.- *versely into the barrei andoommunicating wibh the hole A. One side of the barrel A, between its endand the transverse ho1e. A is slotted no permit che attachng-bolt B tobe inserted into the barrel, and the slot is ohen filled with a block Awhich is secured in its position. The bolt B is provided With a T-shaped head B, which is contained in che transverse hoie A sud serves tohold the bolt from being dmwn out of the barrel. The head B issemiaylindrical in shape, With its curved side B bearing against the sdewa11 of the transverse hole A 'lhe bolb B is screw-threaded for aportion of its length, as ai; B and is provided With a p1ain enter end Bprojecting beyond the end of the spoo1 and forming a gudgeon upon whichthe spool rotanes.

The end of the barrel A is inclosed by the fla.nges (3 01" a disk 0,which is in contact Wth the end of the barrei, and s provided ai; itscenter with a screw-threaded hub C engaging the screw-thread B 'lhe disk0 is provided With spanner-holes 0 130 ailow the disk to be screwed uponthe bolt B and brought i11fi0 close contact With the end of the barre1Serial No. 633,549. (No model.)

A, thereby drawing the head B of thebol; firmly against the side Wa11 ofthe transverse hoie A The head D consists of acircuiar disk of W0od orother suitable materiai, having a central ho]e D 00 ailow the b01t B topass through and fittiug' a hub E on the washer E, whici1 is screwedupon t-he boib B, thereby clamping the head firmiy between the washer Eand the disk 0.

I am aware that it is not new to unite the barre1 and head of 13116jack-screw by means of a joint-boit provided With a screw-thread toreceive a screw-threaded washer which holds the spooi-head in place andhaving a sleeve 01 thimble inciosing the end of the barrel, said thimbie01 sleeve being provided Wth spurs which enter the head and prevent itfrom being rotated independentiy of the sleeve, and I do not ciaimsuola, broadiy.

The opposing surfaces of the washer E and disk 0 in my improved spoolare smooth, thereby ailowing the head D bo nurn on the disk 0 and thewasher E to turn 011 nhe head D. The disk 0 is also provided With ascrewthreaded hub which enters the end of the barrel and engageS thescrew-threaded section of the bois B, so that in putting the partstogether the disk 0 is first screwed tghtiy upon the 100115 E in orderto firmiy cisunp the end of the barrei between the head of the boit andthe disk 0 and cause 11116 13011; to be held rigidly in postion andeoincident wiih the axis of the barrel before the head D is appiied. Thehead D is then piaced over the end of the bolt in contact with the diskC and the washer E is screwed firmly against it, and as the washer E andhead D are ca-pable of an independent rotation relatively (30 che disk 0the two screw-threaded hubs C"and E acf as check-nuts to each other whenthe head is clamped between the disk zmd the washer.

In the drawings I have represented only one end of the spool, as theopposite end is a duplicate.

VVhat I ciain1 as my invention, and desire to secure by Letters Patent,is-

1. The combination With the barre1 of a spool, of a joint-bolt heidconcentricaliy in the end of said barrel, and having a screw threadedsection, a disk provided With a circu1ar flange inelosing the end ci chebarrel and. a concentro screw-threaded hub inserted in the end of thebarrel and screwed upon said bolt whereby the bo1t and disk are firmlyclamped in positon, a, washer screwed npon sad bolt and a head clampedbetween said disk and said washer and said disk ha,ving sn1ooth opposngsurfaces, substantially as descrbed.

2. The combination of a barrel, a joing-bolt held in said barrel andhaving a sere w-threaded section, a disk screwed upon sad b01t aganstthe end of the barrel, a head held against said disk and a washerscrewed upon said bo1fi ouosde sad head and having a con-

